- Update all date/time formatting functions to use 'es-ES' locale instead of 'en-US' or 'de-DE'
- Update utility functions in utils/date.ts and utils/exchange.ts
- Update all component files that use date formatting
- Update e2e test helper to match new Spanish date format
- All formatting now uses Spanish locale regardless of selected language as per PR requirements
The auth tests expected '/' to show user email (old counter page).
Now regular users redirect to '/exchange' after login/signup.
Updated tests to:
- Expect /exchange URL after login/signup
- Check for 'Exchange Bitcoin' heading instead of email
- Update logout tests to verify /exchange access
- Update invite redirect tests for /exchange
